81640273

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 106178688

約数和(自身を除く): 24538415

約数列:

[1, 11, 13, 17, 43, 71, 121, 143, 187, 221, 473, 559, 731, 781, 923, 1207, 1573, 2057, 2431, 3053, 5203, 6149, 8041, 8591, 9503, 10153, 13277, 15691, 26741, 33583, 39689, 51901, 67639, 88451, 104533, 111683, 146047, 172601, 369413, 436579, 570911, 674713, 1149863, 1898611, 4802369, 6280021, 7421843, 81640273]

約数ペア:

[(1, 81640273), (11, 7421843), (13, 6280021), (17, 4802369), (43, 1898611), (71, 1149863), (121, 674713), (143, 570911), (187, 436579), (221, 369413), (473, 172601), (559, 146047), (731, 111683), (781, 104533), (923, 88451), (1207, 67639), (1573, 51901), (2057, 39689), (2431, 33583), (3053, 26741), (5203, 15691), (6149, 13277), (8041, 10153), (8591, 9503)]